Inking and inking-off mechanism for rotary printing-machines.



APPLIUATIOK FILED JAN.,18, 1909. V 973,520. Patented 0013-. 25, 1910.

2 sums-SHEET 2.

N xcai'msses- I lnventibn' M '6 z mith mey. 1 Y

PAUL ODON LAFFITTE, 0F PARIS, FRANCE.

INKING AND INKING-OFF MECHANISM FOR ROTARY PRINTING-MACHINES.

Specification of Letters Patent.

Patented 0a. 25, 1910.

Application filed January 18, 1909; Serial No. 472,859.

To all whom it may concern: Be it known that I, PAUL ODON LAr- FITTE, a citizen of the French Republic, residing at 7 Rue de la Michodiere, Paris, in. the Department of Seine, France, have in vented a new and useful Improvement in Inking and Inking-Off Mechanism for R0- tary Printing-Machinea of which the following is a specification.

This invention relates to a mechanism for inking and inking-off for rotary duplicators, By this mechanism there can be obtained I V (1) The possibility of regulating and of controlling at will and at any moment either. the direct inking of the cylinder when it is needful to make ready the apparatus, or for the indirect inking when it is needful to take the actual impressions, continuously and without stoppage in any number reuired. v

(2) The possibility of inking-off the cyl' inder, that is to say of removing from it, all the surplus ink which may have been applied to it, and returning the same directly to the ink holder without loss. This, inkingbfi may be carried out in two ways, either by means of the same organs which serve to effect the direct and indirect in-i in of the cylinder, and in this case the in ing-oif is indirect; or by means of a sup-; plementary scraper attached to these or-; gansyand in this case theinking-ofi' is di-; rect, much more vigorous and rapid.

(3) The possibility of obtaining all the requisite checks and controlling arrange ments both of the inking and of the inking i 01f whether direct or indirect while the ap-? .paratus .is in operation and consequently;

without stopping its production, by the cons: trol of a single leverplaced at and actuated from the outside. h A construction of the invention is illus trated in the accompanying drawing.

Figure 1 shows a side elevation with the, organs in the position for direct inking and fordirectinking-ofi. Fig. 2 shows av par-- tial front elevation. Fig.3, shows a artlali side elevation showing .the organs -1n the. position requisite for the indirect ink ng and the indirect inking-off. Fig. 4 shows a controlling lever with a graduated sector. Fig. 5 shows a partial plan view corresponding to Fig. 1 and to Fig. 3' for the direct inking-off. Fig. 6 shows diagrammatically;

tomofthe hubs 5.

a means for producing a to and fro longitudinal-motion in a roller.

In these drawings, 1 indicates the rotary cylinder of the duplicator, revolving upon the hollow axle 2 fixed in the external frame 3. Inthe interior of the cylinder is fixed a frame upon the axle 2 for holding the ink vessel and the controlling mechanism- This frame comprises at each end a vertical plate 4, a, hub 5 of which surrounds the axle 2 and is clamped upon it by the screw 6. The two plates 51 areconnectedtogether by fiat cross pieces 7 and 8 fixed uponthe top and the bot- These cross pieces are moreover fixed upon the transverse pieces 9 also fastened upon the axle 2 by means of screws 10. Two othercrosspieces 11 further connect the upper parts .of the plates 4 together. In the, frame thus constructed a plate 12: can move vertically, guided at its.

ends by the guides 13'arranged in the plates 4. The ends of this plate 12 are raisedin the form of rails 14 and support rollers 15 mounted upon the ends of an inker 16 so that this latter can move horizontally upon the rails Hand vertically together with the platel2.v It is guided, in this double motion by means of the curved guides 17 formedin the plates 4; and in which the pivots .18. slide, the said pivots beingfixed to the ends of the inker. It therefore suffices' to raise orto lower the plate 12 in order .to obtain asimilar vertical displacement of the inker and 'a transverse motion correspond-' 1ng,th ereto. Any raising of the inker with regard to the plate is prevented by means of the clips 19 fixed upon the plate and engaging in recesses 20 beneath the inker. I11

order to. raise or lower the plate 12, this plate is connected by the parts 21 to two arms 22 which are bound together by screws 23 with an oscillating shaft 24 mounted in the interior of the hollow axle 2, which axle is conveniently slotted for the passage of the screws 23. It sufiicesto cause the shaft 2a to oscillate by means ofa lever 25 fixed upon the end of the shaft projecting beyond the frame 3, in order to raise or lower the two ends of the plate simultaneously.

In the interior of: the inker is placed the inking roller 26"which comes in contact with the cylinder 1- when the plate 12. is raised. This contact commences before the termination of the vertical motion of the plate and'becomesmore and more strong in of ther lever-q: eenablesthe .operatorzwto clamp upon the sector 28 the piece which serves thus as a stop and atthe same time as anpointer. In the 3 osition indicated in Figs 9 5 ing s --'d'irect. iThe more the lever isipush ed'eto the right; {zithe greater i becomes" the pressure of *th e.v roller "26 upon the cylinder smiths more abnhdaint vvili bethe inking. Inthe inkefi'th' ere' is xmoreoverd'ocsted. a scraper 31 "Which can -oscillateebtiut the pivots 32"and ."Which posv 'sesses an 'elbow arnif'33. I-his arm 'projects beyond" the inker'e'ndf is provjided vv'i'th a-st'op screw. 34: rranged to imphrpe upon a' slopin g plane 35 =irrfone piece th thei lf t ,12

'vvhenever ftheiin'ker is n'itwed'zjto the lefties shown iif In; -,this positiorrthe scraper is" inclined tthd presses'hiore' for "less-firmly, againstthe i'cller26- so as to'fireduc'ei..inore or less'ithe l ayerzof inknportthis'feller. the. positioIf -fofidirectinking 1 and 2) ithe screw is removes from the "in- "cl'inieclj"pl tne 35.5:a'nd the' Weight off'theflrm 33 "Tcon pels the scrzrpefi 31% toVIn0ve. away from .therollefi '26'; which permits this'l'iattei" to take ahd I supply theimzt'ximum quantity A contacts-inking roller -36; is mounted iiponitwo levers T37 osijillating'uponian tixle 3S ahd impelled by?springsi39fwliich tend,

to press-this "roller "'36- i-zr'g ainst the-cylinder: 1. "i-Vh'en thefpl'ate "'12 is lowered together with" its." inker, the transverse motionofthis L1 0 latter which results, fof- Te-f-fect' to bring theizinkijngfl'roller 1 26fin contact-swi ch the roller Besi'shUWn"in Figii for 'thefij hr '-.pose' of ecting' the' 'hdi-rect king ofethe. jtcyliiider.J*""Eh*1eveiff25 .Ii iri' ffrcnt 'i f the divisions pladed ion th leftiupon the "sector28, v to thexleftff. hermeref it pnshes 'thei inker in the saline "direction 'vvherebyf the' roller-3&6 ;m'dre-., pressed gagttinst the r0llef-36, which pressure reduce w "quantity ofisinl'rgr-transm ted from the roller 26 tothe"" 1:5lief*36 ah *fnoni this .lstter LtO the cyiinder, until filieily the rblier -Qfrtrtrns Imits no" "-more""-i"hkat:f fill; etid r on' ithe'i contrttry r removes itfrom the fbller '3tizahd this -intHTIi fI- 0m 1h6" 'cylihder. This i s therein"- mencement -the in direct- *inkingfifi'. --It commences at theverynionient when fthe in direct inkingstops-ahd*vice-versa. These *6 5 on the' contrary "on the rllers than on the pr pertichst lfi-the "cylihder; and consequently according also to-Whether the scraper 31 has by means of =its@ contact screws 34 regulated for this purpose, cleaned off the roller 26 as much as 1:p'ossibleMhusipermitting it atoirestore to the --inker all the ink taken away by the rollers andithuszcleaning the cylinder. I In order to obtain anefiicacious grip between these rollers in spite of the unfavorable slope of the parts 21 and 17, recourse is had to a bent piece 40 fixed'upon'the hub of each arm 22*and arrang'edto act "upon pieces 41 'and 42'ifixedtdhhe inker. "On 'theot-her hand there is constructed in the parts 21* ob- 'l ique slides 43 in which the pivots 44 fixed:

" 'to' the-"arms 22 can move freely. When" the lever'p25gis' turned tothe left, the plate being -at"the*'bottom- '0f its coursejthe pivots 44 can move down 'initheslides 43. --At this momentthe part40"strikesthe part tland' pushesdir'ecfly the inker to the left "inorder 'to' produce the req'uisite pressure between the rollers 26 and 36. Each part 40 has :1- stop screw 45 arranged to encounter thorizontal bar "46 articulated tof the correspond-- "'ingdever 37. This "screw" is adjusted so as :tOifCtLUSEi-th" oscillation of' the lever 37-, that is*"to= say, to" separate lend to remove i the rblleri gfi fromthe cylinder 1; at-thesame tinieas the apart" 40' :presses still more? the .gardiaitcf the icylihder 1. ."The.divisio'ns of 'the-sectOE'QB; indicate "first-1y the Various fde rees cf he 'i'nd'irect' inking, "and "then "the f purpose --hf pressing the blade ageins the "tthe plates" eke-and limit the oscillations -'-'of thele'vers49'in both directions. The scraper 47 is normally held a little distance from the-roller 36 by means of the springs 56.

When the lever 25' is turned to the left "(Figs 1 and 3) away from the position of direct ink-ing, 'theinker sinks down and "-lac'es 'it'selfbeneaththe roller '36- as has een above described; before the roller 26 studs 50' strike thejam'b's 51 and oblige them against the roller'36 with a pressure which ."can be regulated at will, and this obliges *the" ink from this roller, which ink hasbeen --'takend'irect lyfrom the cylinder, to fall back =into theink-holder. The rapidity and the "efficiency of this direct-inking-off are greatest when the studs "50 act upon the points of thejambs. *If the lever 25is turned farther, 'the'jambs escapethe studs 50 and the springs 56-cause the scraper 47 to move away"from the roller 36. When-the lever- '25'is 'bro'ug'ht back,'the spring jambs yield and allow the studs 50 to pass without causing the blade =47 to oscillate.

In the construction shown in the drawing, another roller 57 rests by its own weight against the cylinder 1 above the printing cylinder (notshown on'the drawing) and serves to facilitate the passage of the ink across the cylinder 1 to the place where the pressure is exercised on the said printing cylinder. This roller is mounted in a frame 58 guided by vertical guides 59 on the plates 4L. Stop screws 60 are fixed upon this frame and receive the pressure of cams 61 in one piece with the arms 22 so that the roller 57 will be more firmly pressed against the cylinder at the moment when the indirect inking commences, and then less and less strongly according as this inking is diminished. When the lever 25 is pushed to the left to the utmost, the inking is entirely stopped and the cams 61 cease to act upon the stop screws 60. If the lever 25 be gradually brought back from the left to the right, the same efiects are produced as above described but in inverse order; indirect inking-off, then the re-establishment of the indirect inkin then the progressive in crease of this inking; then the suppression of all inking, then the direct inking 01f by a slight return of the lever, then the reelstablishment of the direct inking and the progressive increase of this latter. The very simple control of the lever 25 therefore permits of regulating the inking and the inking-off of the cylinder at any moment without stopping the cylinder 1 or interrupting the action of the duplicator in any way, and this in such a way as to satisfy all requirements of the printing, so that the operator can thus control the results of'the operation by sight and modify or correct them accordingly.

1 Inorder to'regularize the hiking overthe entire length of the cylinderthere maybe given a to and fro motion to the rollers 36 and 57 A very simple means forproducing this to and-fro motion consists in fixing- .70

the cams 62 upon the supports of the rollers :(Fig. 6) and the projections 63 upon the shafts of the said rollers, so that the sloping faces of these cams will push alternately to the right'and to the left the projections 1 -63'which come in contact with them. The

accompanying drawing shows moreover a cam 64 in one piece with the arm'22 and arranged to 'r'aise'the plate 12 when'the lever the pressure of the part 40 upon the stud- 42.

In the machine above described the mechholder and the rollers is actuated simultaneously and equally by means of a common "shaft Q land a single outside lever 25. "It is,

anism arranged symmetrically at the two 35 ends of the cylinder for moving the--ink however, possible to'divide the'shaft 24 into 6350 *t-wo-p'arts independent one *of another and each provided with a controlling lever.

" VVi'thout departing from the invention,

one may 'of course vary the'forms and constructional arrangements of the inking device, of its support, and of the various organs for regulation and control, the essential, feature being so to combine these organs or other equivalent organs so as to (I) produce the effects hereinbefore described; (2) obtain them by the simple motion of. a controlling lever placed outside the duplicator; (3) and to effect this operation while the apparatus is in full working.

What I claim is:

1. Improved inking and inking-off mechanism for printing machinery, comprising in combination an ink holder, means for moving the said ink holder vertically and transversely in a single curvilinear motion, an adjustable inking roller, an auxiliary roller adapted to press with graduated pressure against the inking roller, an adjustable sc-ra er adapted to press against the surface of t e inking roller, mechanism for actuating the inking and inking-off apparatus by transmitted power, and a controlling lever adapted to effect at will either the direct inking of the inking roller, or the indirect inking thereof by the auxiliary roller, or the removal of ink by the said auxiliary roller, or finally the removal of ink by means of the adjustable scraper.

2. An improved inking and inking-oft mechanism for printing machinery adapted to be located inside the printing cylinder, comprising in combination a vertically and transversely movable ink holder, lever mechanism for moving the said ink holder, a verticallyand transversely in a single curvilinear motion movable inking roller, an adjustable auxiliary roller adapted to press with graduated pressure against the inking roller, an inclinable and adjustable scraper adapted to be pressed against or removed from the surface of the inking roller, and a control lever placed outside the printing cylinder and adapted to control the action of the mechanism and produce either the distribution of ink to the printing roller or the removal of ink from the distributing roller, substantially as set forth.

3. An improved inking and inking-0E mechanism comprising in combination with the rotary cylinder of a duplicator, an ink holder, a frame adapted to support the said holder and its controlling mechanism, guide pieces on the said frame adapted to direct the motion vertically and transversely in a single curvilinear motion of the said inking "holder, an inking roller adapted to come simultaneously into contact with the contents of the ink holder and the inside of the duplicator cylinderwhen the said ink holder is raised, means for controlling the action of the said ink roller, auxiliary mechanism for supplying or removing ink from the said roller and mechanism for effecting at will either the direct inking of the inking roller or the indirect inking thereofby the auxiliary roller or the removal of ink by the auxiliary roller or finally the removal of ink by means of an adjustable scraper.

4. An improved inking and inking-off mechanism for printing machinery, comprising in combination, an adjustable ink container, an inking roller coo crating therewith, auxiliary mechanism a apted to apply ink to or remove ink from the said inking roller, the scraper 47, lever mechanism PAUL ODON LAFFITTE.

Witnesses HANSON C. COXE, JAC H. BAKER. 

